Four national standards for industry standards such as pulp pumps were released

Pulp pump and other four papermaking machinery industry standards were issued by the National Development and Reform Commission.

Pulp Pump QB/T1697-2006, Pulp Pump Test Method QB/T1698-2006, Ball Rotor Pump QB/T1699-2006, and High Pressure Homogeneous Pump QB/T1700-2006, four industry standards, respectively Instead of QB/T1697-1993, QB/T1698-1993, QB/T1699-1993, QB/T1700-2001 and other four old standards.

Piston and Rod Seals

Piston Seals and Rod Seals are important seals used in mechanical equipment. Their main function is to prevent liquid and gas leaks and ensure the normal operation of mechanical equipment. Piston seals and rod seals are usually used in hydraulic and Pressure system, such as hydraulic cylinders and Pneumatic cylinder. The quality and performance of these seals directly affect the efficiency and lifespan of mechanical equipment.


The classification of piston seals and rod seals is mainly based on their material and design structure. According to the different materials, they can be divided into rubber seals, polyurethane seals, polytetrafluoroethylene seals, metal seals, etc. According to the different design structures, they can be divided into unidirectional seals, bidirectional seals, rotary seals, etc.


Rubber seals are a common type of seal, and their main material is rubber. Rubber seals have good sealing performance and wear resistance, and are suitable for medium and low pressure hydraulic systems and Pressure system. Polyurethane sealing element is a high-performance sealing element, and its main material is polyurethane. Polyurethane seals have high wear resistance, high temperature performance and high pressure performance, and are suitable for high-pressure hydraulic systems and Pressure system. PTFE sealing element is a corrosion-resistant sealing element, and its main material is PTFE. PTFE seals have excellent corrosion resistance and high temperature resistance, making them suitable for fields such as chemical and food processing. Metal seals are a type of high-temperature and high-pressure seal, mainly made of metal. Metal seals have high temperature and high pressure performance and corrosion resistance, and are suitable for high temperature and high pressure hydraulic systems and Pressure system.


Unidirectional seals and bidirectional seals are classified based on different sealing directions. A unidirectional seal can only prevent the leakage of liquid or gas from one direction, while a bidirectional seal can prevent the leakage of liquid or gas from both directions. Rotating seal is a type of seal that can rotate and is mainly used for sealing rotating shafts. Rotary seals are divided into unidirectional rotary seals and bidirectional rotary seals.


Overall, piston seals and rod seals play a very important role in mechanical equipment. Choosing appropriate seals can improve the efficiency and lifespan of mechanical equipment, reduce maintenance costs and downtime. When selecting seals, it is necessary to comprehensively consider factors such as the working environment, pressure, and temperature of the mechanical equipment to choose a suitable seal.

Universal Piston and Rod Seals,Interchangeable Piston and Rod Seals,Versatile Piston and Rod Seals

DG Zhongxingshun Sealing Products Factory , https://www.zxs-seal.com